constant crashes while gaming

hello,

i've been getting a crash on my computer within minutes of running certain games on their own, and within about half an hour of playing certain other games while skyping.
the crash i get is: SYSTEM_SERVICE_EXCEPTION

Things I've tried:
reinstalling windows
reinstalling drivers
turning off overclocking
installing drivers for GPU through provided CD
dusting computer
using memtest86 to check RAM, no problems

speccy link: http://speccy.piriform.com/results/a...1JHXaFyfY0HMSG
bluescreenview crash info: http://i.gyazo.com/569ec4826b7a459382a9e0b487da090a.png

thanks for reading, i hope for help as soon as possible!